Reversible and Selective O2 Chemisorption in a Porous Metal–Organic Host Material
作者： Peter D. Southon , David J. Price , Pia K. Nielsen , Christine J. McKenzie , Cameron J. Kepert
DOI: 10.1021/JA202228V
关键词: Crystallography 、 Adsorption 、 X-ray crystallography 、 Crystallinity 、 Chemistry 、 Inorganic chemistry 、 Single crystal 、 Chemisorption 、 Oxygen 、 Ionic bonding 、 Desorption
摘要: The metal–organic host material [{CoIII2(bpbp)(O2)}2bdc](PF6)4 (1·2O2; bpbp– = 2,6-bis(N,N-bis(2-pyridylmethyl)aminomethyl)-4-tert-butylphenolato; bdc2– 1,4-benzenedicarboxylato) displays reversible chemisorptive desorption and resorption of dioxygen through conversion to the deoxygenated Co(II) form [{CoII2(bpbp)}2bdc](PF6)4 (1). Single crystal X-ray diffraction analysis indicates that lattice 1·2O2, achieved included water guests from as-synthesized phase 1·2O2·3H2O, consists an ionic containing discrete tetranuclear complexes, between which lie void regions allow migration other guests. Powder analyses indicate retains crystallinity desorption/chemisorption processes. Dioxygen chemisorption measurements on 1 show near-stoichiometric uptake at 5 mbar 25 °C, this capacity is largely retained temperatures above 100 °C. Gas adsorption isotherms maj...
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